11.19.070 Floodways.
Located within areas of special flood hazard established in Section 11.19.030(b) are areas designated as floodways. Floodways are an extremely hazardous area due to the velocity of floodwaters which carry debris, potential projectiles and increase erosion potential; the following provisions apply:
(a) Encroachments, including fill, new construction, substantial improvements and other development, are prohibited unless certification by a registered professional engineer is provided demonstrating through hydrologic and hydraulic analysis performed in accordance with standard engineering practice that the proposed encroachments will not result in any increase in flood levels during the occurrence of the base flood discharge.
(b) If subsection (a) of this section is satisfied, all new construction, and substantial improvements shall comply with all applicable flood hazard reduction provisions of Sections 11.19.060 and 11.19.065 and this section.
(c) Construction or reconstruction of residential structures is prohibited within designated floodways, except for:
(1) Repairs, reconstruction, or improvements to a structure which do not increase the ground floor area; and
(2) Repairs, reconstruction, or improvements to a structure, the cost of which does not exceed fifty percent of the market value of the structure either:
(A) Before the repair, or reconstruction, is started; or
(B) If the structure has been damaged, and is being restored, before the damage occurred.
Work done on structures to correct existing violations of state or local health, sanitary or safety codes specifications which have been identified by the local code enforcement official and which are the minimum necessary to assure safe living conditions, or to structures identified as historical places, may be excluded from the fifty percent. (Ord. 2129, § 2, 2021.)